The Mk3 is the Octavia built 2013–2020. The registration's age identifier is the quickest check: 13 to 70 plate. The V5C gives the first-registration date, and this generation's fitments apply from the first 2013 cars onwards up to the 2020 run-out.
Main beam (high)H15VerifiedH15 twin-filament serves main beam + DRL on halogen cars. Bi-xenon D3S; LED headlamps non-replaceable.
Front fogH8Likelybriskoda halogen list says H8; briskoda 2016 vRS thread says H16 (x2 per side); birnen-typ lists H8 or H16. Check fitted bulb; not on base trims.
Sidelight / DRLW5WLikelybriskoda xenon-car thread says W5W sidelight (501); birnen-typ lists W5W or H15 (DRL filament of H15 on halogen). DRL on halogen = H15; LED DRL on xenon/LED lamps.
Front indicatorPWY24WVerifiedAll variants. Headlamp removal/access needed.